Archer&#39;s bow



y 3 Y. J. NYVALL 2,001,470

ARCHER S Bow Filed May 9, 1952 2 Sheets-Sheet 1 wil gym "tom all.

May 14, 1935.

Y. J. NYVALL ARCHER S BOW Filed May 9, 1932 2 Sheets-Sheet 2 Patented May 14, 1935 UNITED s'm'rcs ARCHER/S BOW Yngve J. Nyvall, San Pedro, Calif. Application Maya, 1932, Serial No. 610,006-

12 Claims. (01. 273-1075) This invention relates to archers bows and more particularly pertains to longbows of the collapsible type.

An object of the invention is to provide an archers bow which is adapted to be folded for convenience in carrying, when not in use, and which embodies an intermediate section on which end members of the bow are carried including hinged joints on which the bow end members may be swung toward and away from each other.

Another object is to provide a construction in the intermediate section whereby the latter may be readily disposed to securely retain the bow end members in their extended bow forming position, and be easily operated to effect folding of the bow.

Another object is to provide a ing the tension of the bow, and porated in the folding section.

Another object the bow whereby means for vary opening intermediate the ends of the bow- Another object is to itating sighting of the with great accuracy.

A further object is to provide a means in .asso.- ciation with the folding features of the bow whereby the bow string may be readily relieved of tension to permit collapsing of the bow and also be placed under tension on assembling the bow.

With the foregoing objects in view together with such other objects and advantages as may subsequently appear, the invention resides in the parts and in the combination, construction and arrangement of parts hereinafter described and claimed and illustrated by way of example in the accompanying drawings, in which:

Fig. 1 is a view of the bow as seen in side elevation in its assembled position;

Fig. 2 is a view of the bow as seen in .its collapsed or folded position;

Fig. 3 is a perspective view depicting the intermediate bow section; r

Fig. 4 is a detail in horizontal section and plan as seen on the line 4-4 of Fig. 3;.

Fig. 5 is a view in vertical section taken on the line 5-5 of Fig. 4;

Fig. 6 is a detail in side elevation as seen in which is incorinner terminals of the the direction of the arrow 6 of Fig. 3 with parts shown in section;

Fig. 7 is a view in side string tensicning and trating the mode of operation thereof; Fig. 8 is a detail in cross section taken on the line 8-8.of Fig. 7; I i

Fig. 9 is a view in cross section as seen on the line 9-9 of Fig. 7;. e

Fig. '10 is a view in cross section as seen on the line l0-l0 of Fig. 7.

Referring to the drawings in elevation of the bow ends of the members if and I2 andalon'g' opencompass the the outer ends in place The intermediate section B embodies a metallic side plate It and on which is aifi'xed a pair of spaced sockets I1 and i8 adapted to receive the bow members =1 l and I 2; the sockets projecting from the back of the side plate and having their bow end receiving recesses opening oppositely in relation to each other in the direction-ofthe length of the side member l6 and arranged so that when the inner ends of the bow members It and I2 are seated therein the outer end portions 7 extend along and abut against one side or the bow member extending between the straps H" and I2.

indicatedzat a and space therebetween.

The inner ends of the how'members H. and 1.2

of said straps to, retain the latter slackening device illuswil 40' of the side plate 1 6 plate and from.

spaced apart the extent of the spacing of the sockets I1 and l8 thus providing an opening D leading through the bow mediate the ends thereof.

Thespace between the margins a and b of the plates l9 and 28 serves as a means for permitting introduction of an arrow laterally into the opening D. This space,however, is normally closed by a filler block 2| affixed to a weak plate spring 22 attached atone end to the socket H as by rivets 23; the spring22 projecting beyond the block 2| and having its free end curved outwardly over the plate 2| to permit the arrow being readily introduced under the end of the spring so that on shoving the spring the latter willbe sprung outwardly to withdraw the block of the arrow laterally between the ends a and b of the plates l9 and means for detaining'the block 2| in engagement with the ends a and b, the margins of. the latter are of convex or V -shaped cross section and the adjacent margins of the block 2| are concave to conform thereto; the plate 22 being su fficiently resilient to permit it being sprungto such extent as to allow the block 2| to be-moved in and out of engagement with the plates l9 and 20,

Projecting inwardly from the margin 1) of the the inner face of the plate l6 are ledges 25 and 26 which ledges are disposed on acommon'plane and havetheir adjacent pins 30'and 3| are end portions for the arrow, as .a passage-and guide "30 and 3| are threaded/to receive edges spaced apart to form a slot 21 therebetween, the margins of which slot extend equi-distant'on opposite sides .of the vertical center of the open-1 ing D between the plates l6 and lQ-ZD with the. marginsof the slot converging 'frointhe rear end thereof toward the forward end thereof. The

ledges 25 and 26afford a support at their forward and the slot 21 serves for the arrow feathers orvanes.. a As a means for affording a combined pivotal and slidable connection between the bow members H and I2 and the intermediate section B, pivot w a mounted on the bow members and I2 adjacent the inner ends thereof, the outer ends of which extend through elongated slots 32 and 33 formed in the plate It and extending longitudinally thereof, as indicated in dotted lines-in Fig. 5 and through corresponding slots 34 and 35, r'ormed on the plates l9 and 20, as shownin Fig. 3. The outer ends of the pins v thumb nuts 36 and 31 whereby the bow members I and l2 may be tightly clamped between the plates and the .plateJB. 7 I Extending on opposite sides portion of the bow-member'll are stiff bowed plate springs 38 and'39 the outer ends of which bear against opposite side members of the strap H. and which springsiextend' longitudinally between the plateslfi and and have their inner ends connected-together across the inner end of the bowmember H by a connecting memberMl l7, and correspond ranged to bear on opposite side members of the strap l2 onthe bow member l2, which springs are connected together by connecting-member 43 extending over the inner end of the bow member'l2 and adapted to seat in the socket IS; the springs tween the plates l6 andZU. the springs 39 and llare The outer ends :of

d a 2,001,470 the plate Hi and the plates 19 and 20 W111 be the arrow upwardly beneath 2| from between the ends" or" the plates l9 and 20 and thereby allow passing;

29 into the opening D. As a 1 of the bow members ing movement in a of the inner end 1 4| and 42 extending longitudinally .be-:

free to slide on the l2 while the outer ends of the are engaged by tongues 44 and straps: H and springs'38 and 4| 45 struck from the straps H and i2, as shown in Fig. 5. The springs 39 and 42 being arranged on the inner side of the bow act as compression springs, while the springs 38 and 4| being disposed on the outer side of the bow and being attached thereto at their ends act as pull springs, so that both sets of springs serve to'yieldably oppose inward flexing of the bow.

Formed on the longitudinal margins of the plate l6 are outwardly extending parallel flanges 45 and corresponding marginal flanges 46 and t1 are formed respectively on the longitudinal edges of the plates l9 and 2G. The flanges 5 and A6 are adapted to be engaged by slides 38 and 49 carried. by thefsprings 38 and 39, and the flanges 45 and vill are adapted to be engaged by slides 5|! and 5| carried by the springs 4| and 42; theslides extending over the springs and having inturned ends arranged to slidably engage the flanges. Each of the springs 38, 35, 4| and 42 is formed with a longitudinally extending slot 52 and extending through each of the slides 68, 53,

and 5l is a headed screw 53 the shank of which 7 extends through the slot 52 and the head 54 of which engages; the inner side of the spring onopposite sides of the slot 52. A thumb nutz'ai'; is screwed on'the outer end of the screw'53 against theslide whereby thelatter may beclamped into engagement with the spring. The slides may thus be adjusted to various positions longitudinally of the springs so as to vary the tension of the end portionsthereofprojecting from the slidesto thereby offer more or less resistance to flexing of the bow members on drawing the string C aswillbe later described;- the inner. ends being capable of slightflexdirection such as to'be opposed by the springs;

a The bow-string C is attached at one end thereof to the outerend oi thebow member lin a usual manner, but as a meansfor enabling ready assembling and collapsing of the bow the other end of the string is attached to. the outer. end of the bow member lz bymeans of an adjustable connector'jE adapted to be operated to stretch the string when assembling the bow and to slacken the string when it is the bow. j v

The string connector Eis here shown as" comprising a sleeve 5B' slidably mounted on the outei end' portion of the bow'member l2 to which'the string C is'attached'by forming the latter with a loop '51 which is engagedwith a .ring. 58 carried on the sleeve 56. A lever 59 is connectedv at one endthereof to lugs 65) on the sleeve .by a pivot pin 6|, which leverextendsin the direction of the length of .the bowmember i2 along desired to collapse and fold the outer side thereof'and toward the inner end of the .bow member. A link 62 is pivotally con. nected at 'oneendthereof to the'lever 59 intermediate the ends of thelatter by a pivot 63, the other end of whichlink is pivoted at B t to lugs on a collar 65 fixed on the bow member |2 at a point spaced inwardly from the outer end ofthe latter; The lever 59 is designed to be positioned to extend along member l2 a'nd""when so arranged the sleeve 56 will be disposed in its outermost string stretchin'gpositiornas shown in full'lines in Fig. 7. The pivot 63 is arranged to then be positioned in inwardoffsetrelation to. a plane extending through the axes of the pivots 6| and 64 whereby the tensipnor: pullzofthe string C :on the sleeve 5'6. will the outer side of the bow versely of the bow section l face to face atan an le to the 7 55 so that when act to thrust the lever 59 and the link 62 inwardly against the bow and thereby automatically hold the sleeve 55 in its outermost position. When it is desired to slacken the string, the lever 59 is pulled outwardly to move the pivot 53 to the opposite side or" the plane of the axes of the pivots 6i and 54 thus swinging the link 62 outwardly and sliding the sleeve 55 inwarrfly along the bow member i2 to a position as indicated in broken lines in Fig. 7. The tension of the bow pulling on the string C will serve to assist in effecting inward movement of the sleeve on the lever 59 and link 52 being slightly swung outward.

The bow is equipped with a sighting device 5 which is here shown as embodying a pair of mirrors F and G which are fixed on the ends or" a rock shaft 85 turnably carried in bearings on the side plate i9 and frictionaliy held against free turning movement. The shaft to extends trans- B at one side of the how close to the opening D, and the mirrors are attached to the opposite ends of the shaft by projections ti and 63 extending from corners of the mirrors whereby the latter may be disposed to project from one side of the bow in a sighting inner and outer faces of the bow section B when not in use. The mirrors extend in offset but parallel relation to each other and are disposed axis of the shaft disposed in their sighting position, as shown in Fig. 6, the mirror I will be disposed with its'center on a plane below the lower margin of the mirror G.

The mirrors when disposed in their sighting position serve to reflect the target or object to be aimed at, the image of which is reflected by the mirror (3- onto the lower mirror F and thence to the eye of the archer, as indicated by the broken line H in Fig. 6. The mirror F is reticulated or lined, as indicated at 89 in Fig. 3, in such relation to the longitudinal center of an arrow seating on the arrow supporting ledges 2'5 and 26, that when the object aimed at appears in the mirror with the point aimed at appearing at the intersection of central crossed lines of the reticule the arrow will be directed toward such point. However, in aiming, allowance is made for trajectory and currents of air.

As a means for facilitating centering of the arrow on the bow string 0, the latter has a button l5,- fixed thereon in such proximity to the longitudinal center or" the string that when the inner end of the arrow is engaged with the string and abutted against the button, with the arrow seated on the ledges 25 and 26, the axis of the arrow will lie on a plane extending centrally of the bow.

When the bow is in its folded or collapsed position the bow members ii and i2 are disposed to extend substantially at right angles from the intermediate section B to project in corresponding directions therefrom, as shown in Fig. 2, and when so disposed the pivot pins SE3 and 3! are arranged members H and 22 will then be disposed contiguous each other thus imparting to the folded structure the general shape of a quiver.

When it is desired to assemble the bow into its operative position, the nuts 36 and 31 are loosened and the bow members I l and I2 swung outwardly into their e'xtendedposition with the string connector E in its string slackening position. inner end of the bow members are then inserted in the sockets i7 and is, thereby positioning the pins 36] and adjacent the inner ends'of the slots 34 and 35 whereupon the nuts 35 and 3! are tightened to securely clamp the bow members relative to the-intermediate section B.

The string connector E is then operated by swinging the lever 59 inwardly to effect stretching of the string C and tensioning of the bow H, as before described.

When it is desired to vary the tension of the extend through the opening D by inserting it through the slot formed between the margins at and b of the side plates is and 28, as before stated, so that the shank of the arrow will then rest upon the ledges 25 end or" the arrow is then engaged with the string C adjacent the button it and the bow drawn and and 25.' The feathered released to effect propulsion of the arrow through the center of the bow. On

I the feathered end of the arrow passing through the opening D, at least one of the feathers, of which there are usuallythree, will be caused to traverse the slot 2'! so that theside margins of the opposite sides of the feather to stabilize the arrow against spinning or wobbling in flight.

When the archer desires to employ the sight mirrors F and G, the latter are disposed in their operating position to reflect the target in the mirror F, as before explained.

While I have shown and described a specific embodiment of the invention, I do not limit myself to I claim: 1 i. In an archers bow, an intermediate bow section having an arrow receiving opening leadgagement with the margins of said slot.

4. In an archers bow, an intermediatebow section having an arrow receiving opening leading therethrough formed with through which an arrow may be laterally passed, a plate spring extending slot will coact with the and means for detaining said block in enlld V, a guide passage for section having an arrow receiving opening leading therethrough formed with a side wall slot through which an arrow may be laterally passed,

a plate spring extending over said slot one end of which is fixed to said section and the other end of which is free and curved outwardly, a block'carried on said spring arranged to extend between the margins of said slot to fill the latter, and means for efiecting releasable interlocking connection between said block and the margins of said slot.

6. In an archers bow, section having an ing therethrough formed with a side wall slot through which an arrow may be laterally passed, and an arrow support extending transversely of said opening having an open ended slot forming a guide passage for the'arrow feather.

7. In an archers bow, :an intermediate bow section having an arrow receiving opening leading therethrough formed with a side wall slot through which an arrow may be laterally passed, and an'arrow support extending transversely of said opening. having an open ended slot forming the arrow feather, the margins of: said slot converging toward each other from one end thereof toward the other.

8. In an archers bow, an intermediate section, end sections connected to said intermedidiate section 'for longitudinal and pivotal movement relative thereto, sockets on said intermer diate section to receive the inner ends of said end sections.

9. In an archers bow,

an intermediate bow an intermediate section,

arrow receiving opening leade tion, bow end members end sections, pivot, pins hingedly connecting said end sections to said intermediate section, means affording longitudinal movement of said end sections relative to said intermediate section, and sockets on said intermediate section .to receive the inner ends of said end sections.

10. Invan archers bow, an intermediate section, end sections connected to said intermediate section for longitudinal and'pivotal movement relative thereto,'sockets on said intermediate secs:

tion to receive the inner ends of said end sections, said intermediate section being formed with an arrow receiving opening leading therethrough between said sockets.

11. In an archers bow, an intermediate section, flexible bow end members connected to said section, plate springs carried by said intermediate section arranged to yieldably oppose flexing of said bow members, and adjustable slides connected'to said springs and engaging said intermediate section for varying the action of said springs in resisting flexing of said how members.

12. In an archers bow, an intermediate secconnected to said intersection for longitudinal and pivotal movement relative thereto, sockets on said intermediate section to receive the inner ends of said end members, a string connecting the outer ends or" said end members, and means for drawing said string taut to bend said end members when the latter are engaged in said sockets, said means being adapted to slacken said string to permit withdrawal of said members, from said sockets.

YNGVE J. NYVALL.

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